package org.example.lotterysystem.common.utils;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.util.CollectionUtils;
import org.springframework.util.StringUtils;

import java.util.Collection;
import java.util.concurrent.TimeUnit;

@Configuration
public class RedisUtil {

    private static final Logger logger = LoggerFactory.getLogger(RedisUtil.class);

    /**
     * RedisTemplate:  先将被存储的数据转换成字节数组（不可读），在存储到redis中，读取的时候按照字节数组读取
     * StringRedisTemplate： 直接存放的就是string（可读）
     * 项目背景：String,string
     */
    @Autowired
    private StringRedisTemplate stringRedisTemplate;

    //-----------------------String--------------------------------
    /**
     *
     * 设置值
     *
     * @param key
     * @param value
     * @return
     */
    public boolean set(String key, String value) {

        try {
            stringRedisTemplate.opsForValue().set(key, value);
            return true;
        } catch (Exception e) {
            logger.error("RedisUtil error,set({},{})",key,value,e);

            return false;
        }
    }

    /**
     * 设置值（设置过期时间）
     * @param key
     * @param value
     * @param time 单位秒
     * @return
     */
    public boolean set(String key, String value,Long time) {
        try {
            stringRedisTemplate.opsForValue().set(key,value,time, TimeUnit.SECONDS);
            return true;
        } catch (Exception e) {
            logger.error("RedisUtil error,set({},{},{})",key,value,time,e);

            return false;
        }

    }

    /**
     * 获取值
     * @param key
     * @return
     */
    public String get(String key) {

        try {
            return StringUtils.hasText(key)
                    ? stringRedisTemplate.opsForValue().get(key)
                    : null;
        }catch (Exception e) {
            logger.error("RedisUtil error,get({})",key,e);
            return null;

        }
    }
    //----------------------------------------------------------------------------------------------------------

    /**
     * 删除值
     * @param key
     * @return
     */
    public boolean del(String... key) {

        try {
            if (key != null && key.length > 0) {
                if (key.length == 1) {
                    stringRedisTemplate.delete(key[0]);
                } else {
                    stringRedisTemplate.delete((Collection<String>) CollectionUtils.arrayToList(key));

                }
            }
            return true;

        }catch (Exception e) {
            logger.error("RedisUtil error,del({})",key,e);
            return false;
        }
    }

    /**
     * 判断key是否存在
     * @param key
     * @return
     */
    public boolean hasKey(String key) {

        try{
            return StringUtils.hasText(key)
                    ?stringRedisTemplate.hasKey(key)
                    :false;
        }catch (Exception e) {
            logger.error("RedisUtil error,hasKey({})",key,e);
            return false;
        }

    }
}
